Improvement in devices for securing covers to vessels



CHARLES A. MARSHALL.

Improvement in Devices for Securing Covers to Vessels.

Patented Feb-13,1872.

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GHAFLES'A. MARSHALL, or CLEVELAND, 01110.

IMPROVEMENT lN DEVICES FOR SECURING COVERS TO VESSELS.

Specification forming part of Letters Patent No. 123,572, dated February13, 1872.

To all whom "it may concern:

Be it kno \vn' that I, GnARLEs A. MARSHALL, of Cleveland, in the countyof Ouyahoga and State of Ohio, have invented a certain new and ImprovedDevice for Securing (lovers to Vessels; and I do hereby declare that thefollowing is a full, clear, and complete description thereof, referencebeing had to the accompanying drawing making part of the same.

SPECIFICATION.

Figure l is a side view of the vessel. Fig. 2 is a top view. Figs. 3 and4 are transverse vertical sections. Fig. 5 is a detached section.

Like letters of reference refer to like parts in the several views.

The nature of this invention relates to a class of vessels used for thetransportation of articles which need to be kept air-tight during suchtransportation; and the object of this invention is to secure the coversof said vessels in such a manner as to render the same airtight, andwhich covers can be easily put on and taken off as required, ashereinafter described.

In the drawing, Fig. 1, A represents the vessel, which may be of anycapacity and shape desired B is the cover. der side of said cover israbbeted out, thereby forming a shoulder, 0, Figs. 3 and 4, which fitsclosely the inside of the vessel, while the upper part of the coverprojects over and upon the brim of the vessel, as shown in said figure.

The cover is secured to the vessel by means of the cross-bar D, Fig. 3,the ends of which are held by the lugs E, a detached view of one beinggiven in Fig. 5. From the cross-bar D projects a stem, F, Fig. 4,passing through the center of the cover. On the end of said stem is cuta screw, G, to which is fitteda fingernut, H, whereby the cover isscrewed down upon the vessel. I, Figs. 3 and 4, is a bail or guidesecured to the under side of the cover, the purpose of which willpresently be shown. The manner of putting the cover upon the vessel isas follows: Said cover is placed upon The edge of the unthe vessel withthe cross-bar D suspended in the bail I, the ends of the bar being alittle distance one side from each lug. The bail I acts as a guide inpreventing the cross-bar from swaying in either direction, as it mightotherwise do, and is of suflicient length to allow the ends of the bar,while suspended therein, to fall just below the point a of the lugs. Thecover is then turned in the proper direction, and the ends ofthecross-bar strike against the side I) of the lugs; or, in case that thebar is not lowered sufliciently for this the ends thereof will hitagainst the point a of the lugs, which are made very sloping, as shownin Fig. 5, so as to allow the ends of the bar to slip down and undersaid points into the notches c,- or the bar may be lowered enough toadmit of its ends fitting in under the lower part cl of the lug, ifdesired. Upon the end of thestem is screwed the'nut H, drawing thecross-bar to the position shown in Figs. 3 and 4, the ends of the samefitting up closely and securely in c the notches c, and thereby drawingthe cover down tightly upon the rim of .the vessel. By this manner ofcentral fastening the edge of the cover is forced down upon the rim ofthe vessel equally all'around, so that no part of the cover will springup in consequence of a greater force being applied to other parts, as isoften the case when the fastening is of such a nature as to bind downthe cover by the clamping being applied to opposite sides only insteadof being applied equally, as in my fastening.

Claim.

What I claim as my invention, and desire to secure by Letters Patent.is-

The cross-bar D, stem F,-and nut H, in com bination with the bail I,lugs E, vessel A, and cover B, substantially in the manner as and forthe purpose set forth.

CHARLES A. MARSHALL.

Witnesses:

J. H. BURRIDGE, D. L. HUMPHREY.

